For PIOS

John Hoffecker, University of Colorado at Boulder (image)

University of Colorado at Boulder

Caption

CU-Boulder researcher John Hoffecker, shown here working at a site in Russia dating back 45,000 years, believes there is mounting archaeological evidence for the evolution of a human "super-brain" no later than 75,000 years ago that spurred a modern capacity for novelty and invention.

Credit

Vance T. Holliday, University of Arizona

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